Hello:

I need to run one of my projects from the command prompt. Asides from running it normally like after compiling it like:

Java package.MainClass

I need to run it like:

Java package.MainClass fileName.txt

What does that means? I mean, what can I do with that .txt? I'm supposed to use that text to recover data, but I just don't understand how can I do that.

The last one is:

Java package.MainClass < fileName.txt

That one is easy, the only thing it does is read the command from that fileName instead of the keyboard. Still I don't understand what to do with the second one...

I need help, please. Link to where I can read about it would be very helpful, or any examples, whatever... any help is appreciated.

Edwin